Glen Coyne,
Drums sounds are subjective. If the sound of the drums on my Korg Pa800 were to used with a song on a Kn7000 it would not sound very good. Keep in mind that the same drums sound on a different keyboard is subject to a different sound producing engine, they will sound different.

The first Kn7000 I bought did not have good drums or basses; it was bought when they first came out. The one I have now excels in both areas, the drums and basses are good as they are. I used the an edited user drum kit to build up the drum sounds, it did the job. I fine no need to do the same on the one I have now.

John C.
IMPORTANT: What type of music are you playing on the Kn7000?